Door or gate opening and closing device.



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PATENTED JUNE 25, 1907.-

R. B. BROWNE.

an N A? APPLICATION TILED APR- 6. 1904.

DOOR 0R GATE OPENING AND CLOSING DEVICE.

0a., WASHINGTON. n. c,

THE ORRIS ETERS No. 858,147. v PATENTED JUNE 25, 1907 R. B. BROWNE.

DOOR 0R GATE OPENING AND CLOSING DEVICE. APPLICATION FILED APR.5. 1904.

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UNITED STATES PATENT OFFICE.

RICHARD B. BROWN E, OF NEW :YORK, N. Y., ASSIGNOR TO RIOHEY, BROWNE AND DONALD, OF BROOKLYN, NEW YORK.

DOOR OR GATE OPENING AND CLOSING DEVICE.

Specification of Letters Patent.

Patented June 25, 1907.

Application filed April 5, 1904. fierial N0- 201,674.

To all whom it may concern.-

Be it known that I, RICHARD B. BROWNE, of New York, in the borough of Brooklyn and State of New York, have invented certain new and useful Improvements in Door or Gate Opening and Closing Devices and I do hereby declare the following to be a full and clear description thereof.

My invention relates to sliding doors and gates.

Preferably the doors are of the vertical sectional horizontally-sliding type and are generally hung on hangers from above.

The present invention consists of the following construction and combination of parts, the details of which will first be fully described and the features of novelty then set forth in the claims.

Figure 1 represents a side elevation of a portion of a sectional door structure with parts broken away. Fig. 2 represents a vertical section on line {I} a: of Fig. 1, with the hangers and hanger supports omitted. I Fig. 3 represents a plan view showing the sectional door in its open position. Fig. 4 is a similar view showing the sectional door in different position from that of Fig. 3, the door being partially closed. Fig. 5 is a side elevation of the parts in the same position shown in Fig. 4.

In the present instance a three-element sectional door is shown supported on hangers from above, it being understood that any number of sectional elements may be employed.

1 represents the tracks, one for each door and, its hangers. The doors are supported on the tracks by hangers 2, in the particular form illustrated, crescent compensating hangers pivoted at 3 to U-shaped inverted hanger brackets 4 rigidly secured to the tops of the door sections.

The section 6 is stationary and forms one side of the door opening. The rack 8 is also stationary and is rigidly secured at one side of the door opening. The first sliding door section 9 is provided with a gear housing 10,

rigidly secured to the top of the door and provided with a gear 1 1, meshing with the rack 8. The second door section 12 is provided with a rack 13 rigidly secured to the top thereof and meshing with the gear 1 1. The gear housing 10 embraces both racks 8 and 13, thereby securing the intermeshing of the gear with thereto a rack 18, which passes through the gear housing 15 of the second door section and meshes with gear 16 thereof. To secure this interdependence of operation I preferably arrange the racks 8 and 13 and the gear 11 in one horizontal plane, and the racks 14 and 18 and the gear 16 in another horizontal plane in order to make the door operating mechanism compact and enable the section doors to be set closely to each other.

It will be understood that the gears and racks may be all located in one horizontal plane if so desired.

The rack 14 is secured to the door 9 by the bracket 32. The rack 8 is secured to the stationary part of the door opening by bracket 31. The rack 18 is secured to the door 17 by bracket 33. The rack 13 is secured to door 12 by bracket 30.

The invention is applicable to doors supported at their lower ends and moving in guideways, as well as to doors supported by overhead tracks and hangers. The number of sections of the door is not limited. The door may be provided with two or more sections. It may have any number of sections. This door is particularly adapted for use in elevators. relatively large exit and ingress to an elevator cage is secured within a given space.

By the word floor in the claims is meant a 'door, gate, or the like.

The rack 8 is stationary and is engaged by gear 1 1, which in turn engages gear 13. Movement of door section 9 (to which gear 11 is connected) to the left (as seen in Fig. 3) causes rack 13 to move in the same direction at twice the speed of door section 99. Rack 13 is secured to door section 12, which therefore has the same rate of motion as said rack.

Rack 14 is fixed to door section 9 and has the same rate of motion. Said rack is engaged by gear 16 borne by door section 12, and said gear in turn engages rack 18, secured to door section 17. The rate of movement By the employment of this door a of rack 18 (and hence its door section 17) is therefore the resultant of the motions of rack 14 and door section 12, acting through the gear 16; this resultant is a speed of door section 17 equal to three times the speed of door section 9.

From the above it is obvious that the sections 9, 12 and 17 have relative rates of motion equal to 1, 2 and 3, respectively, Where the unit is the rate of motion of section 9. The distances to be traversed by the sections are of the same relative proportions. The door sections therefore complete their full opening and closing movements in the same time.

I claim:

1. The combination of a door composed of two or more sections, a gear mounted upon each section except the last, a gear rack secured to each section in operative connection with a gear, and a rack secured to the door casing or jamb and in operative connection With a gear on one of the door sections.

2. The combination of a door composed of multiple sections, gears mounted upon the sections in different horizontal planes and racks upon the sections meshing With the gears in planes corresponding to the gears.

3, The combination of a door composed of multiple sections, a series of tracks, Wheels upon the sections running upon the tracks, toothed gears mounted upon the sections in different horizontal planes and toothed racks upon the sections meshing With the gears in planes corresponding to the gears.

In testimony whereof I have afliXed my signature in the presence of tWo Witnesses.

RICHARD B. BROWNE.

Witnesses:

JAMEs GILMoUR, B. H. SHEPARD. 

